Interesting article in today's NZZ about the rise in cases of dogs infected by Heart- and Lungworm* (
Angiostrongylus vasorum ) in Switzerland. The parasite larvae is often found in slugs/snails; dogs (and foxes) who eat these are at a risk for infection.
The number of cases reported is still relatively small, but one should be aware. (I remember when the mutts and I first arrived; it was thought back then that Switzerland was more or less free of the parasite.) One hypothesis for the spread is the increase in the fox population in urban areas.
http://www.nzz.ch/nachrichten/hinter....14724078.html
Looking ahead to spring (or slug season, as it's known here

) it's probably a good idea to discuss your individual risk with your veterinarian.
*Please note that this is NOT the same misquito-born Heartworm,
Dirofilaria immitis, with which many Americans or folks from tropical countries are familiar. In the UK,
Angiostrongylus vasorum is sometimes called 'French Heartworm'. (Although that is generally thought to be something of a misnomer...)